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1. (WO2018005567) AUTOMATED WELL PRESSURE CONTROL AND GAS HANDLING SYSTEM AND METHOD

Pub. No.:    WO/2018/005567    International Application No.:    PCT/US2017/039607
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Thu Jun 29 01:59:59 CEST 2017
IPC: E21B 21/08
E21B 33/06
E21B 41/00
Applicants: SCHLUMBERGER TECHNOLOGY CORPORATION
SCHLUMBERGER CANADA LIMITED
SERVICES PETROLIERS SCHLUMBERGER
SCHLUMBERGER TECHNOLOGY B.V.
Inventors: COUTURIER, Yawan
LIEZENBERG, Bastiaan
JOHNSON, Glenn
RAKHUNDE, Vikas
HARDT, Jesse
Title: AUTOMATED WELL PRESSURE CONTROL AND GAS HANDLING SYSTEM AND METHOD
Abstract:
A method includes pumping fluid into a drill string extending through a riser into a well. A managed pressure drilling system is operated to maintain a selected fluid pressure in the well between the well and the drill string. A fluid influx into the well or a fluid loss into a formation traversed by the well is detected using measurements of fluid pressure in the well and fluid flow into and out of the well. The method includes automatically abating the fluid influx by closing an annular blowout preventer disposed in the riser or abating the fluid loss by operating the annular blowout preventer and pumping a sacrificial fluid into the drill string.